import java.io.*;
public interface Database{
	public void insert(Node myNode);
	public boolean delete(Node nodeToDelete);
	public boolean replace(Node nodeToReplace, Node myNode);
	public Node search(Node nodeToSearch);
	public boolean saveToFile(File file) throws Exception;
	public boolean loadFromFile(File file) throws Exception;
	public Node listIterator();
	public boolean equals(MyDatabase o);
	public String whoIAm();

}